美国和日本海军在海军航空的发展方面领先。
The American and Japanese navies took the lead in the development of naval aviation.
日本海军自卫队排出了一艘驱逐舰和数个直升机。
Japan's Maritime Self Defense Force has dispatched a destroyer and helicopters.
在其顶端是舰队的大炮，这是为了防卫日本海军的攻击。
There are ship cannons at its very top that were intended to defend the land from attacks of the Japanese navy.
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